Panel door



FIG. 1 is a perspective view of a panel door, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of the rollers, guides and corner connector hardware is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a “panel door”, as shown and described. 